x+15=8x-13

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Solution for x+15=8x-13 equation:


Simplifying
x + 15 = 8x + -13

Reorder the terms:
15 + x = 8x + -13

Reorder the terms:
15 + x = -13 + 8x

Solving
15 + x = -13 + 8x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-8x' to each side of the equation.
15 + x + -8x = -13 + 8x + -8x

Combine like terms: x + -8x = -7x
15 + -7x = -13 + 8x + -8x

Combine like terms: 8x + -8x = 0
15 + -7x = -13 + 0
15 + -7x = -13

Add '-15' to each side of the equation.
15 + -15 + -7x = -13 + -15

Combine like terms: 15 + -15 = 0
0 + -7x = -13 + -15
-7x = -13 + -15

Combine like terms: -13 + -15 = -28
-7x = -28

Divide each side by '-7'.
x = 4

Simplifying
x = 4

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